JUST BREATHE! By: Sandra Ballentine The Tech Breathwork apps and YouTube videos have been a thing for a while. Gaining traction are handheld devices that track air quality and fitness trackers and other wearables that incorporate breathing- related metrics like breathing rate, pulse oximetry, heart-rate variability and habitual breathing patterns. Some interesting examples include: HeartMath and lief use wearable sensors to help users track and…